The Crescent Toy Co. Ltd. was founded in 1922 by Henry Eagles and Arthur Schneider, initially producing various lead toys.
In 1949 the firm moved from south Tottenham in London to Wales (with 'Harvey' Eagles staying in London and setting up a firm by the name of Harvey), but much of the production was poor, although this period did see an interesting series of die-cast military equipment. Harvey sold his name to the Lone Star Toys company.
What's it worth? Take a look at this Crescent price guide: sold listings for a value indication.